COVID-19

Officials say COVID-19 antibody testing is crucial to reopening business — but what is it?

A lab scientist works to validate rapid antibody tests of COVID-19 samples
A Mirimus, Inc. lab scientist works to validate rapid IgM/IgG antibody tests of COVID-19 samples from recovered patients on April 10, 2020, in Brooklyn, New York City.
Misha Friedman | Getty Images